EP 0493906 B1 19951102 - Optical probing method and apparatus.
Title (en)
Optical probing method and apparatus.
Title (de)
Verfahren und Apparat zur optischen Messung.
Title (fr)
Méthode et appareil pour mesurage optique.
Publication
Application
Priority
US 63678291 A 19910102
Abstract (en)
[origin: EP0493906A1] An integrated circuit device (11) is tested by directing a laser beam (19) onto an electrochromic member (17) in close proximity to a conductor (13) of the integrated circuit. Reflected laser light is directed to a detector (21) which converts it to an electrical signal for display by a lock-in amplifier (25). The display characterizes the voltage on the conductor (17) and thereby permits diagnosis of the operation of the integrated circuit (11). <IMAGE>
IPC 1-7
IPC 8 full level
G01R 19/00 (2006.01); G01R 31/302 (2006.01); G01R 31/308 (2006.01); G02F 1/15 (2006.01); H01L 21/66 (2006.01); H01S 3/107 (2006.01)
CPC (source: EP US)
G01R 31/308 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0493906 A1 19920708; EP 0493906 B1 19951102; DE 69114256 D1 19951207; DE 69114256 T2 19960530; JP H0545424 A 19930223; JP H07104397 B2 19951113; US 5126660 A 19920630
DOCDB simple family (application)
EP 91311489 A 19911210; DE 69114256 T 19911210; JP 33592191 A 19911127; US 63678291 A 19910102